Syringe



0ct. l0, 1950 E. R. MELUNGER ETAL 2,525,419

SYRINGE 2 Sheets-Sheet 1 Filed Feb. 21. 1949 Oct. l0, 1950 E. R. MELLINGER ETAL 2,525,419

SYRINGE Filed Feb. 21, 1949 2 sheds-sheet 2 patented Oct. 10, QS

o-FFICE SYRINGE Edward R. Mellinger and Ruth E. Mellinger,

Williamsport, Pa. v

Application February 21, 1949, Serial No. 77,492 16 claims. (c1. 12s-229) The invention relates to syringes of the douche bag type, and has particular reference to apparatus of this kind which is adapted to be connected to a bathtub faucet or the like in order that pressure of the Water supply system may be utilized to create the desired jet velocity at the applicator nozzle of the syringe instead of having to produce a pressure head by suspending the mixing bag and its liquid contents at a high level above the nozzle.

As is well known, syringes depend upon jet Velocity and the force created thereby to penetrate certain cavities of the human body which may require irrigation by plain water or therapeutic treatment by antiseptics or medicaments carried in solution by Water. For various treatments which may be administered by a syringe there usually are a variety of water temperature and velocity requirements. Prior to our invention, syringes ofthe faucet-pressure douche bag type were notably deficient in that it was impracticable for the user to pre-condition the apparatus for a selected potential jet energy value as well as temperature with such accuracy that the user could be assured of having the desired jet velocity and temperature at the instant of initial nozzle discharge.

It, therefore, is our primary object to provide a syringe of the type mentioned which has simple and easily operable means by which it may be conditioned for pre-selected jet velocity and temperature. More specifically, since velocity of a fluid in motion is a function of pressure, We have undertaken to predetermine jet velocity by manipulation of the water pressure in the supply conduit leading from the bathtub faucet to the mixing bag of the syringe. The specific means utilized for pressure conditioning also permits temperature regulation.

A further object of the invention is to provide a syringe possessing the advantages just mentioned which is extremely simple in construction, inexpensive in cost to manufacture, comprises very few parts, and is so compact in form that it may be packed conveniently in a small space in a travelling bag.

A still further object is the provision of an all-purpose syringe which not only is capable of use under faucet-pressure conditions but is equally well adapted to be used in the alternative manner with the filled bag suspended from a hook to obtain a pressure head through altitude whenever a faucet connection is impracticable. This feature includes means whereby the bag itself maybe used interchangeably as either a hot water bottle or as an ice bag after disconnetiony of the supply and discharge conduits.

Another object is to provide the syringe with a special form of faucet connector which may be applied to faucet nozzles or spouts of different sizes such as may be encountered when travelling.' This connector is adapted also to be readjusted to t a home faucet tightly again after the connector has become so Worn by continued use as to be in danger of being blown loose from the faucet spout by the water pressure and thereby endangering the user or at least causing great inconvenience.

Further objectsand advantages of the invention-will become apparent as the following specific description is read in connection with the accompanyingydrawings, in which:

Fig. 1 is a fragmentary small scale side elevation of a simplified form of the syringe, showing the same connected to the common spout of a vbathtub faucet of standard mixing type;

Fig. 2 is a side view of the faucet connector for the syringe, showing the same partly in section;

Fig. 3 is ya plan View of the faucet connector;

Fig. 4 is a fragmentary side elevation, partly in section, of a. modified form of the syringe as a whole, showing an improved construction of pressure conditioner;

Fig. 5 is a fragmentary horizontal section on line 5 5 in Fig. 4;

Fig. 6 is a similar View on line 6 6 in Fig. 4;

Fig. '7 is a view similar to Fig. 6, showing the compensator screen in inverted position;

Fig. 8 isa detail elevation of the coupling plug alone,V showing the supply tube broken away;

Fig. 9 is a fragmentary plan view of the mixing bag, showing the male member of the quickattachable fastening means for the top filling opening in position after the coupling plug has 'been disconnected from the said male member;

. Fig. 10 is a similar-view but showing the male lmember of the fastening means removed;

Fig. 11 is a fragmentary front elevation of a duplex form of connector, showing the same in full lines as applied to separate hot and cold water faucets, the dangling, in operative, shutoff condition of one connector when not needed .for a mixing faucet being shown in broken lines;

Fig. l2 is a similar view of a modified form of duplexrconnector in use with separatehot and cold water faucets;

Fig. 13 is a similar view of the modified connector, showing the condition of the same when in use with a mixing faucet;

Fig. 14 is a large scale vertical cross-sectional reference characters indicate corresponding parts in the several views, a simplified embodiment of our inventive idea is illustrated in ligs.v 1v to 3, inclusive. The syringe shown therein includesa mixing bag 2U which preferably is made of Yrelatively thin, pliable, waterproofv material, such as rubber or rubber substitutes. Bag may be given any suitable form, but we prefer to have it horizontally flat and oval'in plan view so that it will be body-conforming in allo-f its applications as a hot water :bottle lorj ice bag. The bag is shown as being provided with vtwo separate inlets 2! and 22. Inlet `2|-`is provided in one of the fiat walls (the bottom one in Fig. 1) and inlet 22 is located inthe edge of bag 2-0 and preferably at the narrower orend-p'ortion thereof. A

removable closure 23 is provided for inlet 21,.

which is intentionally larger than inlet 22 to permit greater ease in the 'introduction of antiseptics or medicamentsto the bag, or to admit crushed ice when the 'bag is 4to be used as an ice bag. A discharge conduit Zd-which in accordancewith the usual practice-is 'inthe form of a flexible tube of rubberor=like material, has an applicator `nozzle' 25 of suitable shape and material (preferably hard-rubber or plastic) detachably securedtoone end, Vsuch as by a screwthreaded connection -f(not shown), Only one form of applicator nozzle is shownin the drawing, but it is to be understood that other appropriate types of applicator may bev applied interchangeably to the conduit. The opposite or inner end of conduit 215 is detachably secured in similar manner to outlet 26-A provided in the edge portion of bag 2l) preferably at the end thereof opposite to inlet 212'. Discharge conduit 24 requires means by which the iiow of liquid therethrough may be shut off at will', so we have shown a shut-onc clasp 2 of well known type applied externally to the compressible tube which constitutes the said conduit. A supply conduit 28, which preferably includes al softV rubber tube like that employed in the- V'construction of discharge conduit 2a' and which is provided with a shutoli" clasp 28', is adapted to connect bag 20 to a water faucet such as th'estandard cold and hot water mixing faucet indicated 'by numeral 29.

Theterrnconduit has been'chosen to designate any suitable iiuidf conducting'o'r channeling means of appropriate length and has particular reference to the supply end "of the apparatus. The reason for this broadterm should become more clearly apparent when considering the modified form of apparatus disclosed in Figs. 4 to 10 inclusive, wherein aA chamber 'of' -considerably larger diameter than "they rubber-j tubing forms part of the conduit'and'isfintn'ded to be ein-v braced in the meaning of thatftrm.

One end-of supply'conduiti shown connectedV to inlet 422 of bag Zj-by 'coupling member 28a. This is a detachable,V preferably screwthreaded connection (not shown). rIhe opposite `end of conduit 28 includes affaucet connector30, which preferablyvis of 'the' usual conical shape 4 and made of the same\ material as the tubular portion of the conduit. Inwardly with respect to the pliable internal flanges or ribs 3|, which `engage the common spout -32 of a mixing faucet larger end opening through the convex face of said member. Member 34 is shown in a position with itsl concave side lowermost, wherein maximum restriction of water flow and pressure increase may be expected, but is reversible in position to minimize the said eiect. In the use of this simplified formof pressure conditioning means, the determination of the degree of pressure, las adjusted by manipulation'of the hot and cold water valves 29 and 29 of faucet 29, must be judged bythe users sense perception at the time of testing the water temperature. The manner in which this is done should becomek apparent yfrom the following description of the operation of the simpliiiedform yof the syringe as disclosed in Figs. 1 to 3. y

Assuming that the apparatus is connected up precisely as shown, shut-olic clasp 21 should iirst be closed to prevent accidental premature dis- 'charge'of'iiuid through nozzle 25. Then, conduit 2a should bedisconnected from inlet 22 of bag 2t'. Ii plain water is to be usedl for a simple irrigation, such as an enema, the bag may remain in the horizontallyresting position shown. However, if an antiseptic solution or a medicament is to be used, the bag should be tilted so that inlet 22 is at a higher-levelV than outlet 26. If the concentrated antiseptic or medicament cannot be introduced through inlet 22, bag 26 shouldV be turned over to place inlet 2l on top, in which case closurel 23 will have to be removed. VAfter the desired material has been poured into the bag through inlet 2l, closure 23 must be replaced inv saidinlet. While bag 20 is supported in a position which will insure against loss of the antiseptic or othercharge through` inlet 22, the free end of conduit 28 may be permitted to dangle beneath the water faucet, which usually will cause it to-be directed toward the bathtub drainage outlet (not shown), as is ciu-ite desirable. New, the hot and'- cold water valves 29 and 29 maybe opened and adjusted until the water pouring from the free endof conduit 28 has the correct temperature, as judged by sticking a finger (or thermometer) inthe' stream. At the same time, the pressure may be judged by the sensible force. of impact against the linger and the appearance caused by aeration. vAt first, the user will have to make practice plain water tests including actual discharge through nozzle 25 to determine what pressure as sensed at the end of thedangling supply conduit willproduce the desired jet velocity at the nozzle. With practice, it should be possible to judge pressure with sufficient accuracy. Assuming that, in a particular operation, the pressure and temperatur'ehave been adjudgedto be correct, adjustment of valves 29 and Zf should be discontinued and shut-off clasp 28 shouldbe closed to stop now through water pressure andv temperature have been conasas-,4.1.9.

ditioned for a contemplated douche treatment'. A preliminary potential energy condition has been set up in conduit 28 behind shut-od clasp 2'8", which condition bears a definite relation tothe potential energy condition which will be produced a moment later in discharge conduit 24 behind shut-oil clasp 2l. Now, conduit 28 may be reconnected to bag inlet 22 and shut-off clasp 28 may be re-opened. This action will cause water under appropriate .pressure to enterbag for mixing with the antiseptic or medicament, or for immediate use by way of -applicator nozzle 25 a. plain water irrigation. If .the antiseptic or medicament be in solid form, considerable shaking and, kneading of bag 2D will be required to. dissolve it properly inv the water, whereas, if it be in liquid form the mixing should take less time. The bag is so thin that undissolved particles m-ay be felt and the time when the solution is ready for use may be determined. Promptly after this has been accomplished, the syringe should be put to use. When shut-off clasp 21 is opened, the nozzle jet velocity should be correct for the intended treatment, due to the pre-conditioning of pressure first in supply conduit 28 and later attainment of the desired potential energy condition in discharge conduit 24 prior to release of the lluid through nozzle 25..

Turning now to the modification disclosed in Figs. 4 to l0, the simple faucet connector-housed pressure conditioner has been supplanted by a slightly more complex device but one which is productive of far more accurate pressure conditioning, which does not have to be judged by sense perception.

Mixing bag 20 has been modified somewhat. Inlet 22 has been provided with a skirt 3B to serve as a funnel whenever it becomes desirable to pour liquid linto the bag through said inlet. To permit hook suspension of bag 2D under appropriate conditions, a perforated tab 31 is formed to project from skirt 36. The second` inlet has been re-located in the top flat wall centrally thereof for convenience and is designated by numeral 3.8. Further structural details of inlet 38 will be described presently. Outlet 26 and appurtenances are unchanged. Y

The principal changesare in the supply conduit structure. The faucet connector is of a modified form and has been rex-designated 39. Omission of any internal pressure conditioning means is the only structural feature of connector 39 that need be mentioned at this point. Complete details of the modified connector will be described hereinafter. The tubular part of conduit 28 remains the same and the shut-off clasp 2.8. has been retainedalthough its usual function may be performed by means to be described presently. The end of conduit 28` which is to be coupled detachably to bag 2,0 now includes an enlarged portion or casing 40 which will be termed a coupling member because it servesto couple conduit 23 to inlet 38. A screw connection (not shown) might be employed, but for reasons which will appear presently it is preferred to couple coupling member 46 to baginletA 38 by means of the relatively at quick-attachable fastening means 4|, which includes female member 4|' tted permanently in bag inlet 38 and male member l4 I which is removably attached, as by screw threads, to nipple 42 provided centrally on. the lower end or base portion 43y of said coupling member 46. Although some other shape may be adopted for coupling memberA 40, it isl preferred to vmake it cylindrical, as 'shown,.;whereby it .is

6. madeA .convenient to detachably connect base 43 to the. tubular side wall portion 4-4 by screwthreaded means as at45. Acover 46 for coupling member 4l]v surmounts wall 44 and is secured detachably the-reto by suitable means, such as screwsr 41. A centrally disposed sleeve 48 projects downward from cover 46 into the interior chamber 49` of coupling member 40 `but terminates short of the bottom thereof. Sleeve 48 is externally screwthreaded for engagement with a piston-like horizontal partition 50 which is free to .be rotated about sleeve 48 as an axis .and which will be caused to move axially in chamber 4S when thus rotated. .Partition 5|) incidentally serves to seal chamber 49 againstlealrage of water from the main lower part of the latter to the part above thel said partition for a purpose which will appear presently, but its primary function is to support a lcage 5| in which a valve member 52 is mounted. Valve member 52 preferably is in the form of a ball and is adapted to cooperate with valve seat 53 provided in the lower end of sleeve 4.8- A valve spring 54 is provided in cage 5|- beneath valve member 52 and tends to urge saidmember into closing engagement with seat v53. Therefore, rotation of partition 5B and consequently cage 5|, which is integral therewith, will cause adjustment of the tension of valve spring 54. In order to permit rotative adjustment of partition 50 from the exterior of coupling member 40, an operating arm 55 is provided on the top of partition `5|) and projects eX- teriorly through an arcuate slot 56 in cover 46. The upper, free end of arm '55 preferably is bent radially and provided with a finger-piece 51. A pointer 58 projects downward from arm 55 for cooperation with an indicating scale 59 delineated on the outer peripheral face of wall 44, as shown in Fig. 8. Since adjustment of partition 50 and cage 5| will regulate the spring tension which must be overcome by water pressure to permit the ball valve to open, scale I59 preferably is provided With markings that represent particular. settings of spring tension which, from experimental tests, have been found to produce water pressure values capable of generating the nozzle jet velocities generally suitable for the usual irrigation-al and therapeutic treatments. These settings, which may be termed cardinal point.

settings, should be few in number and for convenience of selection may be designated as Low, Moderate and High A fourth setting marked Off represents such a high tension valve condition, that the water flow in supply conduit 28 may be shut off effectively by adjusting pointer 58 to this setting instead of having to resort to shut-off clasp 28. Clasp 28 has been retained for use whenever it may be more accessible t0 the user in connection with a particular treatment.

It is quite likely that the jet velocity corresponding to one or more of the cardinal point settings of the factory-produced syringes may not exactly suit every individual user. For instance, the High setting may create jet Velocity a shade too high for a particular user in a treatment which requires a definitely high velocity. To meet such contingencies, auxiliary pressure conditioning means of a compensating nature has been provided for use when needed to modify the regular cardinal point settings applied to the primary valve tension pressure conditioner. The compensator as it will be called is in the formof a perforate member 60 similar to lconditioner 34.-'.used inthe simplified embodiment of our' syringe (Fig. 2). rations 6| disposed in the same manner with relation to the concavo-convex faces. Compensator 80 is adapted to be seated removably in the bottom of chamber 48 in coupling member 40. In Fig. 4, a compensator is shown in position with the larger ends of its perforations lowermost, in which arrangement the standard cardinal point setting pressure will be modified subtractively. By inverting the compensator, the correction will be additive. It should be apparent that it is possible with a single compensator to decrease or increase the pressure conditioned by the valve tension conditioner slightly to accommodate the jet velocity more closely -to individual needs. It is proposed to supply a plurality of compensators having varying numbers of perforations of .different sizes and shapes with each syringe marketed in order to afford means for almost any degree of compensation.

As shown in Fig. 4, an imperforate closure 62 has been provided to take the place of male member 4|" of the quick-attachable fastening 4| of coupling member 48 when said male member has been disengaged from female member 4|', in converting bag 20 into a hot water bottle or an ice bag. Closure 62 may be permanently attached to member 4|', as by exible member 83, to prevent loss while not needed for use in its intended capacity. This closure is very thin so that no uncomfortable protrusions will be presented when in use in closing engagement with fastening member 4| A shallow knurled head 62 of relatively large diameter is formed on the exterior face of closure 62 to facilitate manual rotation. For the same purpose of conversion, a temporary closure 84 for bag outlet 28 may be attached permanently by flexible member 65 to said outlet. Closure 64 may be used to replace the threaded end of discharge'conduit 24 in converting to a hot water bottle or ice bag.

The operation of the modified form of syringe differs from that for the simplified embodiment of Figs. l to 3 chiefly in the pre-setting of the pressure conditioning means inl relation to adjustment of the'hot and cold water valves 29 and 29 of faucet 29. Assuming that bag 28 is already prepared for introduction of water under a predetermined pressure through inlet 38, coupling member 48, while unconnected with said bag inlet, should be held so that nipple 42 thereof and attached male fastening member 4|" are directed toward the bathtub drainage outlet. Then, supposing that moderate nozzle velocity is desired, pointer 58 should be moved to the marking Moderate on dial scale 58. After this, faucet Valves 29 and 29" may be adjusted until the water pressure in supply conduit 28 is sufliciently high to open the valve of the primary pressure conditioner. Thereafter, the two valves should be adjusted relative to each other until the temperature of the water jet issuing from the coupling plug has been sensed to be suitable. If only slight ad'- justment of pointer 58 from Moderate toward High serves to shut off the water ow, it will be known that both pressure and temperature have been properly conditioned. For safety, the pointer should be turned further toward High, but it need not be turned to Off except when pres` sure is being conditioned at High Leaving the faucet valves in their adjusted conditions, cou'- pling member may now be engaged with theV bag inletand tightened by a quarter-turn of fastening device 4|. Pointer 58 must now be turned to Moderate to re-open the conditioner valve.`

Member 60 has tapered perfo-V The syringe will now be ready for use unless an antiseptic or medicament is being used, in which event the required mixing operation must be performed by shaking and kneading the bag.

The manner in which a compensator is used when required to modify the pressure conditioned by the primary means therefor has already been explained. When its use is indicated, a compensator should be installed prior to the pressure and temperature conditioning just described Fig. l1 illustrates a special duplex type of faucet connector which may be desired by persons who travel a great deal and no not want to be inconvenienced by the lack of a mixing faucet when needed for a syringe treatment. In this duplex connector, a generally Y-shaped tube section 66 isY adapted to have its stem 61 connected to supply conduit 28 as at 68, preferably detachably, and

has separate conical connectors proper 89 and 1|] Y provided at the free ends of branches 1| and 12, respectively, for engagement with the separate hot and cold faucets 13 and 14 of a non-standard bathtub xture. Individual shut-off clasps 15 and 16 are provided on branches 1| and 12 respectively of tube section 66. When a standard mixing faucet is encountered, one connector may be applied to the common spout and the other connector may be permitted to dangle in inactive condition, as shown in broken lines, with the corresponding shut-oi clasp turned off, or closed. Figs. 12 and 13 illustrate a modified form of duplex connector device, wherein a junction piece 11 having a Y-shaped internal channel 18 is adapted to have its base portion connected preferably detachably to conduit 28 as at 19. The rising branches of channel 18 are screwthreaded for detachable engagement with the shank portions of separate connectors proper 82 and 83. To meet the situation wherein a standard mixing faucet is available, a closure plug 84, which is permanently attached to junction piece 11 by flexible member 85, may be used to plug channel branch 8| after connector 83 has been detached therefrom.

-Fig. 14 illustrates a safety connector which is especially desirable for use with a syringe, particularly when high strength antiseptics are being used therein and which could cause serious burns if a loose connector were to be blown olf the faucet spout during the time when water from the faucet had not yet suliciently diluted the antiseptic. This improved form of the connector has a plurality of aligned sections, preferably the three sections 86, 81 and 88. Section 86 is connected directly to supply conduit 28, section 81 has a screwthreaded connection with section 86, and section 88 has a similar screwthreaded connection with section 81. The successive sections 86, 81 and 88 are progressively larger in internal diameter from the inner one to the outer one, whereby the spout engaging ribs 86', 81 and 88 of the respective sections 86, 81 and 88 are progressively larger and adapted to i'it spouts of correspondingly different sizes. If a large spout is encountered, section 88 Vof the connector may t, whereas, if section 88 is too large to t, said section 88 may be detached from section 81 so that the spout will reach the latter section. Similarly, section 81 may be removed to permit engagement of the smallest section 86 with an unusually small spout. When the outer section 88, for instance, becomes so worn internally that it ceases to t an available'faucet, such as one in the users home, section 88 may be removed permanently to permit use of sec. tion 81 thereafter. The advantages of such a multi-section connector should be appreciated without further discussion.

In Fig. 15, a further modification is disclosed, wherein aligned sections 89, 90 and 9! of outwardly increasing internal diameter like the Fig. 14 construction are joined .together by screwthreaded bushings =92 and 93. Bushing 92 is adapted to be interposed between sections -89 and 90 and Ito be threaded into both. Similarly, bushing 93 is interposed lbetween sections 90 and 9| and threaded into the same. Each bushing therefore serves as means for securing two adjoining sections together in detachable manner. Furthermore, each bushing serves to mount a faucet engaging ring 94 of elasticA material, such as rubber, in av position to supplement the action ofthe integral ribs 95.' Each ring 94 is secured detachably in the corresponding bushing by a screwthreaded gland 96, which may be removed to permit replacement of a worn or defective ring. The advantages of this improved connectorfeature should be apparent without added explanation.

Fig. 16 illustrates a simple device which may be used to aid sense perception in testing the water for pressure in use of the simplified form of syringe disclosed in Figs. 'l to 3. In this instance, the end of supply conduit 28 which is to be detachably connected to the mixing bag inlet has a thin-walled flexible pressure-testing tube 91 affixed in any suitable manner to the coupling member 98. Testing tube 9.1 is disposed in longitudinal extension of the supply conduit and should be of such length that .a jet of water issuing from said conduit through tube 91 will influence the shape of the latter. To increase the sensitiveness of tube 91 to water pressure, its free end may be constricted in internal diameter by the provision of inturned lip 99. When using this testing device, the coupling member 98 should be held in the horizontal position shown in Fig. 16. The tube 91 will sag due to its weight and will have the curved form shown in `solid lines when the pressure is low, whereas, when the pressure is high, it will stand out almost straight as shown.-

in broken lines. By experimentation, the user can mentally catalogue the tube forms which represent those pressure values essential to the production of nozzle jet velocities suitable for the usual irrigation treatments. After pressure conditioning has been adjudged correct as indicated by testing tube 91, said tube may be inserted into the mixing bag inlet opening as the supply conduit is coupled therewith. The testing tube will thus occupy an out of the way position while inactive.

The foregoing structural details are of course intended to be illustrative of the presently envisioned embodiments of our inventive concept, it being understood that numerous changes in shape and size of parts and in the materials used in their construction may be made in practice without departing from the scope of the invention as claimed hereinafter.

We claim:

1. A syringe of the class described comprising a mixing bag having inlet and outlet openings, a supply conduit adapted to have one end thereof connected to a water faucet and the other end detachably connected to the inlet opening of said bag, an applicator nozzle, a discharge conduit connecting the bag outlet opening with said nozzle, flow shut-off means for the discharge conduit, pressure conditioning means provided in said supply conduit and comprising a casing forming part of said conduit and having an enlarged chamber with upstream inlet and downstream outlet, a valve seat provided in said chamber inlet, a movable valvemember cooperating with said seat, a valve spring urging said valve member against its seat, and means by which the tension of said valve spring may be adjusted to predetermine the water pressure which will open the valve.

2. A syringe as defined in claim 1, which includes an additional pressure conditioning means in the form of a perforate member disposed in said chamber across the channel aiforded thereby, said perforate member being reversible in position and having axiallytapered perforations, whereby said additionallconditi'oning means may be used to modify the water pressure predetermined .by therst-mentioned valve-type conditioning means. i

3. A tubular faucet connector for the supply conduit of syringes and similar fluid discharge devices which comprises a series of aligned sections arranged in endwise abutting relation, and means for detachably securing each section to each abutting section, the respective diameters of the internal faucet-engaging surfaces of said sections being reduced progressively from the outer free end of the connector toward the inner end thereof, whereby the'connector as a whole may be tted to faucets of different sizes or may be accommodated when internally worn to any one faucet.

4; Ina faucet connector as defined in claim 3, the inclusion at the juncture between abutting sections of a retaining bushing, and a faucetengaging vring removably heldby said bushing interiorly thereof, whereby said ring may be replaced when wornf. v

5. A syringe of the class described comprising a mixing bag of'fla'ttened form having separate flat`V wall and edge inlet openings and an Aedge outlet'openi-ng, said-bag being provided with a funnelling lskirt surrounding the edge inlet opening and with a perforatedsuspension tab projecting from saidiskirt, removable closures for both bag inlet openings and the outlet opening for service when the bag is used as a hot water bottle or an ice bag, a supply conduit adapted to have one end thereof connected to a water faucet and the other end detachably connected to one of the bag inlet openings after the closure therefor has been removed, an applicator nozzle, and a discharge conduit extending from said nozzle and adapted to be connected detachably to said bag outlet openingA after the closure therefor has been removed, v

6. A syringe of the class described comprising a mixing bag having inlet and'outlet openings, a supply conduit adapted to have one end thereof connected to a water faucet and the other end detachably connected to the inlet opening of said bag, an applicator nozzle, a discharge conduit connecting the bag outletopening with said nozzle, flow shut-off means for the discharge conduit, said supply conduit having an internal annular seat, pressure conditioning means provided in said supply conduit and including a floating perforate member adapted to rest upon said annular seat to bridge the fluid channel and influence the rate kof flow and the pressure thereof, and flow shut-off means for the supply conduit.

7. A syringe as dened in claim 6, wherein the pressure conditioning member is co-ncavo-convex in cross-sectional form.

ply conduit and adapted to be engaged detachy ably with said bag inlet opening and including a exible pressure-testing tube in longitudinal extension thereof, said testing extension Yloeing of a size to enter the bag inlet opening in inactive condition when the supply conduit is cou-v pled therewith, ow shut-01T means for said supply conduit, an applicator nozzle; a discharge conduit connecting the bag outlet opening with said nozzle, and flow shut-oli` means for the discharge conduit.

11. A syringe as dened in claim 10, wherein the pressure-testing tube is constricted in internal diameter at its free end.

12. A supply conduit for syringes of the class described including a faucet connector, a coupling member adapted to be engaged detachably with the inlet of a mixing bag, and pressure conditioning means in the form of a chamber having a valve seat, a movable valve member cooperating with said seat, spring means tending to urge said valve member into seated position to shut on the fluid ow, and means by which the tension of said spring means may be adjusted to predetermine valve-opening fluid pressure.

13. In a syringe of the class described, a supply conduit for use with a mixing bag having inlet and outlet openings; said supply conduit including a tubular member having an axial fluid channel devoid of lateral vents and being adapted to have one end thereof detachably conl2 nected to a water faucet'and the other end detachably connected with the inlet opening of the mixing bag, pressure conditioning means provided in said supply conduit and being in the form of a perforate member disposed across the fluid channel and through which the water stream must ow whereby pressure conditioning may be eiected by faucet regulation with the cooperation of said perforate member prior to connection of the supply conduit with the mixing bag, and ow shut-off means for the supply conduit located between the ends thereof where- Vby discharge from the supply conduit may be interrupted pending connection of said supply conduit with the inlet opening of the mixing bag without aiecting the pressure condition already established in the supply conduit.

14. A syringe as defined in claim 13, wherein the perforate pressure conditioning member has axially tapering p'erforations.

15. A syringe as defined in claim 14, wherein the perforate pressure conditioning member is reversible in position to vary the pressure.

16. A syringe as defined in claim 13, wherein the perforate pressure conditioning member is concave-convex in form and has axially tapering perforations whose larger ends open through the convex face thereof.

` EDWARD R. MELLINGER.

RUTH E. MELLINGER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 256,745 Schenck Apr. 18, 1882 1,005,356 Swift Oct. 10, 1911 1,127,898 King' Feb. 9, 1915 1,602,215 Smith Oct. 5, 1926 1,654,745 Miller Jan. 3, 1928 1,655,664 VRussell Jan. 10, 1928 1,973,262 VMcQueen, Jr. Sept. 11, 1934 

